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Model: 11800
Condition: Factory New
Bud's Item Number: 411550137
UPC: 650350118001
MFG: Benelli

*Please Note!! Many of our pictures are stock photos provided to us by the manufacturer and do not necessarily represent the actual item being purchased. Please verify this picture accurately reflects the product described by the title and description on this page before you place your order.



PISTOL GRIP Synthetic Stock

A self defense rifle has to perform the first time, every time. The ultra-reliable A.R.G.O. system incorporated into the new Benelli MR1 does it for the U.S. military, and makes the MR1 the best home defense rifle available. MR1 self defense guns are chambered in 5.56 mm NATO (.223 Remington) and use the battle-proven Auto Regulating Gas Operated (A.R.G.O.) system—the same system developed by Benelli for the M1014 (M4) and used for over a decade in multiple conflicts by the United States Marine Corps.

Built to the same tough military specifications and embodying the solid reliability that the U.S. Marines rely upon, the MR1 has no equal among home defense weapons. It features a stainless steel, self-cleaning piston that operates directly against the proven rotating bolt, thereby eliminating the need for complex linkages found on other, inferior gas systems. This piston-driven system, perfected by Benelli, incorporates a gas port located just forward of the chamber, where the gases are hotter and cleaner, resulting in less fouling and more reliable cycling. The result—a Benelli carbine with features rivaling all other home defense rifles, including Marine—tough reliability and the ability to function in the harshest environmental conditions.

Auto-Regulating Gas-Operated (A.R.G.O.)


On August 4, 1998 Benelli delivered five shotgun samples featuring the A.R.G.O. system to Aberdeen Proving Ground, Maryland. The guns were put through an intensive, grueling test for safety, function and performance. Subjecting them to mud, sand, baking heat and extreme cold, the guns beat out the competition to be chosen as the new U.S. “Joint Service Combat Shotgun.” Benelli’s patented Auto-Regulating Gas-Operated (A.R.G.O.) system has more than met the needs of the U.S. Marines’ M1014 semiautomatic � an ultra-reliable, battle-proven shotgun.


The A.R.G.O. Piston-Driven System is also the heart of the Benelli’s R1 and MR1 rifles, featuring simplicity, sturdiness and accuracy, all packaged in an ingenious design.

Upon firing a Piston-Driven gun, single port, located just forward of the chamber, bleeds gases where they are hotter and cleaner. The results are less fouling and more reliable cycling. A short-stroke, self-cleaning piston and two tappet pistons push directly against the R1’s bolt body, eliminating the need for connecting linkages or heavy action bars. Because the pistons push directly against the bolt, they move only ½-inch for complete and rapid cycling with minimum vibration.

16” Barrel

Synthetic tactical stock with pistol grip.

Finish Black
Action Semi-Automatic
Caliber 223 Remington/5.56 NATO
Barrel Length 16"
Stock Fixed

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